function tinyf_users_update($uid,$name = NULL,$password = NULL ,$email = NULL,$isadmin = -1)
{
    global $tf_handle;
    $id =  (int)$uid;
    if($id == 0 )
        return false ;
    $n_isadmin = (int)$isadmin ; // if 0 = FALSE not int ,,, if int  = 1
    $user = tinyf_users_get_by_id($id);
    if(!$user)
        return false;
    if ((empty($name)) && (empty($password)) && (empty($email)) && ($user -> isadmin == $n_isadmin))
        return false;
    $fields = array() ;
    $query = 'UPDATE `users` SET ' ;

    if(!empty($email))
        {
            $n_email = mysql_real_escape_string(strip_tags($email),$tf_handle);
            if(!filter_var($n_email,FILTER_VALIDATE_EMAIL))
                return false;

            $fields[count($fields)] = "`email` = '$n_email'";
        }

    if(!empty($name))
        {
            $n_name = mysql_real_escape_string(strip_tags($name),$tf_handle);
            $fields[count($fields)] = "`name` = '$n_name'";
        }
    if(!empty($password))
        {
            $n_pass = md5(mysql_real_escape_string(strip_tags($password),$tf_handle));
            $fields[count($fields)] = "`password` = '$n_pass'";
        }

    if($n_isadmin == -1)
        $n_isadmin = $user -> isadmin  ;
    $fields[count($fields)] = "`isadmin` = $n_isadmin";

    $fcount = count($fields);

    if($fcount == 1)
     {
        $query .= $fields[0].'WHERE `id`= ' .$id ; //   $query = 'UPDATE `users` SET '
        $qresult = mysql_query($query);
        if(!qresult)
            return false;
        else
            return true;


     }
    for($i = 0; $i < $fcount ; $i++)
     {
        $query .= $fields[$i];
        if($i != ($fcount - 1)) // i = 0 that the first element in the array .. 2 will be - 1 last 3shan hwa by3ed el array mn wa7ed :D
            $query .=' , ';
     }

     $query .= ' WHERE `id` = '.$id;

     $qresult = mysql_query($query);
     if(!$qresult)
        return false;
     else
        return true;

}



include ('db.php') ;
error_reporting(E_ALL);
ini_set('display_errors', 1);
$result = tinyf_users_update(6,'ggrgrgr','123456',NULL,5);
if($result) //($uid,$name = NULL,$password = NULL ,$email = NULL,$isadmin = 0)
    echo 'success';